Here is an interesting story about an anti-Mason being silenced, on what day? Sept 11.

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In U.S. history, the Anti-Masonic Movement reflected a long-standing suspicion of secret fraternal orders, culminating in the political activities of the Anti-Masonic Party (1827-36). The movement was touched off in 1826 in western New York by the mysterious disappearance of William Morgan, a Freemason who had prepared for publication a book revealing the secrets of the Order of the Masons.

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If the local Masons had simply ignored Morgan's actions, that would have been the end of the matter[citation needed], but some members of the Batavia lodge responded to Morgan's “betrayal” by publishing an advertisement denouncing Morgan, and several attempts were made by unknown individuals to set fire to Miller's newspaper office.[5]

When these efforts failed, a group of Masons gathered at Morgan's house claiming that he owed them money. On 11 September 1826, Morgan was arrested; according to the law, he could be held in debtor's prison until the debt was paid. Learning of this, Miller went to the jail to pay the debt. After several failed attempts, he finally secured Morgan's release.

A few hours later, Morgan was arrested again, now for a loan it was claimed he had not paid back; and for supposedly stealing clothing. He was jailed again, this time in Canandaigua. On the night of 11 September, someone appeared, claiming to be a friend of Morgan's and offering to pay his debt and have him released. Morgan was taken to a carriage that was waiting for him outside the prison. The next day, the carriage arrived at Fort Niagara.[4]

There are several tales of what happened next. The most common one is that Morgan was taken in a boat to the middle of the Niagara River and drowned.[7] A man named Henry L. Valance allegedly confessed to his part in the murder in 1848 and his deathbed confession is recounted in chapter two of Reverend C. G. Finney's book The Character, Claims, and Practical Workings of Freemasonry.